13550313989 has 2 divisors, whose sum is σ = 13550313990. Its totient is φ = 13550313988.

The previous prime is 13550313943. The next prime is 13550314009. The reversal of 13550313989 is 98931305531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8069428900 + 5480885089 = 89830^2 + 74033^2 .

It is an emirp because it is prime and its reverse (98931305531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13550313989 - 2²⁰ = 13549265413 is a prime.

It is a super-2 number, since 2×13550313989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13550313289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775156994 + 6775156995.

It is an arithmetic number, because the mean of its divisors is an integer number (6775156995).

Almost surely, 2^13550313989 is an apocalyptic number.

It is an amenable number.

13550313989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13550313989 is an equidigital number, since it uses as much as digits as its factorization.

13550313989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 47.

The spelling of 13550313989 in words is "thirteen billion, five hundred fifty million, three hundred thirteen thousand, nine hundred eighty-nine".